walmart committed $2 billion to fighting hunger in the u.s. as we work together, we can stamp hunger out. >> and by contributions to your pbs station from viewers like you. thank you. tavis: ben harper has teamed up with master charlie musselwhite, for a new cd, titled "get up!," for the legendary stax label. it has been called cinematic in the storytelling, and it has his own brand of soaring harmonica, and to start, year is a collaboration of what this sounds like. ♪ believe a word you say i do not believe i don't believe a word you say i don't believe ♪ >> bringing something out that you would not otherwise have. tavis: ben, we are in our tent season on pbs. >> congratulations. tavis: and you have been on this program many times, and more than any other guest i have had on, you have been on because of collaborations that you went after, that you wanted to do, and they are the legends, the icons, the old-school guys who you have an appreciation for. why get into this? what is it about these old school caps that you are so drawn to? >> th